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      05-24-2012, 05:15 PM   #5
Super Sic
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Drives: E90 M3
Join Date: Sep 2011
Location: Chicago

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I've had similar noises and have finally found what appears to be a solution (haven't had window rattles for over 2 months). You need to completely clean and lube the seals and flocking. Use a mix of warm water and dish soap to clean the seals and flocking. Once everything dries, apply Carbaflo (you can get it at the dealer - its like $50 a tube) to the seals and flocking.